Less calls to the help-desk - less stress for the users in case of some failure - capacity to inform people in emergency situations.
The capacity to publish rapidly to all users or specific ones important messages about use of critical product like EMR Electronic Medical Record - or important general informations
Sometimes difficulties to check who have seen or not the published messages. Some bugs like unable to stop the display - but the support team correct the bugs relatively quickly.
DeskAlerts has been useful for me in sending IT messages about scheduled shutdowns or technical difficulties. This has been better than using email since our email software has been experiencing bugs, so DeskAlerts makes it so that people can see the alerts even with other technical problems.
I liked that I did not have to rely on an email system and the variety of different options for who to send messages to.
Only thing is that the company has had trouble moving to outside alerts for those outside the company but that hasn't been within my scope.
Very easy to install and configure. Easy to use to send alerts. API works great to automate with scripts or security systems.
A few bugs here and there but they update often so you usually won't be dealing with them for long.